Affirmations.dev vs Zen Quotes
Same instrument, two spec sheets — measured, not claimed.
Affirmations.dev vs Zen Quotes: common questions
Which is more reliable, Affirmations.dev or Zen Quotes?
On our scheduled checks, Affirmations.dev leads on measured uptime — Affirmations.dev at 100% versus Zen Quotes at 90.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Affirmations.dev or Zen Quotes?
Affirmations.dev has the lower median latency in our checks — Affirmations.dev responds in 590 ms versus Zen Quotes at 1657 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Affirmations.dev and Zen Quotes need an API key?
Neither needs a paid key — Affirmations.dev is callable with no signup, and Zen Quotes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Affirmations.dev and Zen Quotes from the browser?
Neither sends browser-friendly CORS headers reliably, so call Affirmations.dev and Zen Quotes from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Affirmations.dev and Zen Quotes free for commercial use?
Affirmations.dev has unclear commercial terms, and Zen Quotes has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.